// USART配置
void Uart_Config(void)
{
USART_InitTypeDef my_USART_InitStructure; // USART初始化结构
USART_StructInit(&my_USART_InitStructure);
my_USART_InitStructure.USART_BaudRate = 115200;
my_USART_InitStructure.USART_WordLength = USART_WordLength_8b;
my_USART_InitStructure.USART_StopBits = USART_StopBits_1;
my_USART_InitStructure.USART_Parity = USART_Parity_No;
my_USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
my_USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
STM_EVAL_COMInit(COM1, &my_USART_InitStructure);//io cofig,GPIO
/* Enable the EVAL_COM1 Transmit interrupt: this interrupt is generated when the
EVAL_COM1 transmit data register is empty */
USART_ITConfig(EVAL_COM1, USART_IT_RXNE, ENABLE);//中断使能。
}
/*******************************************************************************
* Function Name :static s32 BspUsartxInit(void)
* Description :串口及引脚初始化
* Input :
* Output :
* Other :
* Date :2013.01.27
*******************************************************************************/
void BspUsart1Init(void)
{
GPIO_InitTypeDef GpioInitdef;
USART_InitTypeDef UsartInitdef;
NVIC_InitTypeDef NvicInitdef;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_USART1, ENABLE);
USART_DeInit(USART1);
USART_StructInit( &UsartInitdef );
UsartInitdef.USART_BaudRate = 115200;
UsartInitdef.USART_StopBits = USART_StopBits_1;
UsartInitdef.USART_WordLength = USART_WordLength_8b;
UsartInitdef.USART_Parity = USART_Parity_No;
UsartInitdef.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &UsartInitdef);
GpioInitdef.GPIO_Pin = GPIO_Pin_9; //
GpioInitdef.GPIO_Speed = GPIO_Speed_10MHz;
GpioInitdef.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GpioInitdef);
GpioInitdef.GPIO_Pin = GPIO_Pin_10; //
GpioInitdef.GPIO_Speed = GPIO_Speed_10MHz;
GpioInitdef.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GpioInitdef);
USART_ITConfig(USART1, USART_IT_TXE, ENABLE);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
NvicInitdef.NVIC_IRQChannel = USART1_IRQChannel;
NvicInitdef.NVIC_IRQChannelPreemptionPriority = 1;
NvicInitdef.NVIC_IRQChannelSubPriority = 0;
NvicInitdef.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init( &NvicInitdef );
USART_Cmd(USART1, ENABLE);
}
void printf2_Init(int baudrate)
{
#ifndef MULTIPLEXED_OUTPUT
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_Level_1;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource2, GPIO_AF_7);
USART_InitTypeDef USART_InitStructure;
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = baudrate;
USART_Init(USART2, &USART_InitStructure);
USART_Cmd(USART2, ENABLE);
#endif
}
void cereal_init(uint32_t baud)
{
ringbuffer_init(&cereal_incoming, malloc(CEREAL_INCOMING_MAX_SIZE), CEREAL_INCOMING_MAX_SIZE);
#ifdef ENABLE_CEREAL_BUFFERED_TX
ringbuffer_init(&cereal_outgoing, malloc(CEREAL_OUTGOING_MAX_SIZE), CEREAL_OUTGOING_MAX_SIZE);
#endif
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
GPIO_InitTypeDef gi;
GPIO_StructInit(&gi);
gi.GPIO_Pin = GPIO_Pin_9;
gi.GPIO_Mode = GPIO_Mode_AF;
gi.GPIO_Speed = GPIO_Speed_50MHz;
gi.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_Init(GPIOA, &gi);
gi.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOA, &gi);
USART_InitTypeDef ui;
USART_StructInit(&ui);
ui.USART_BaudRate = baud;
USART_Init(CEREAL_USARTx, &ui);
USART_Cmd(CEREAL_USARTx, ENABLE);
USART_ITConfig(CEREAL_USARTx, USART_IT_RXNE, ENABLE);
NVIC_InitTypeDef ni;
ni.NVIC_IRQChannel = USART1_IRQn;
ni.NVIC_IRQChannelPreemptionPriority = 0;
ni.NVIC_IRQChannelSubPriority = 0;
ni.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&ni);
}
void gpsInit()
{
GPIO_InitTypeDef gpio;
USART_InitTypeDef uart;
NVIC_InitTypeDef nvic;
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_UART4, ENABLE);
GPIO_StructInit(&gpio);
gpio.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_11;
gpio.GPIO_Mode = GPIO_Mode_AF;
gpio.GPIO_Speed = GPIO_Speed_25MHz;
gpio.GPIO_OType = GPIO_OType_PP;
gpio.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOC, &gpio);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource10, GPIO_AF_UART4);
GPIO_PinAFConfig(GPIOC, GPIO_PinSource11, GPIO_AF_UART4);
USART_StructInit(&uart);
uart.USART_BaudRate = 9600;
uart.USART_WordLength = USART_WordLength_8b;
uart.USART_StopBits = USART_StopBits_1;
uart.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
uart.USART_Parity = USART_Parity_No;
uart.USART_Mode = USART_Mode_Rx;
USART_Init(UART4, &uart);
USART_Cmd(UART4, ENABLE);
USART_ITConfig(UART4, USART_IT_RXNE, ENABLE);
nvic.NVIC_IRQChannel = UART4_IRQn;
nvic.NVIC_IRQChannelPreemptionPriority = 0;
nvic.NVIC_IRQChannelSubPriority = 0;
nvic.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvic);
}
void usart_setup(usart_dev *dev, uint32_t baudRate, uint16_t wordLength,
uint16_t stopBits, uint16_t parity, uint16_t mode,
uint16_t hardwareFlowControl, uint32_t tx_timeout)
{
/* Check the parameters */
assert_param(IS_USART_ALL_PERIPH(dev->USARTx));
assert_param(IS_USART_BAUDRATE(baud));
assert_param(IS_USART_STOPBITS(stopbits));
assert_param(IS_USART_PARITY(parity));
assert_param(IS_USART_WORD_LENGTH(wordLength));
assert_param(IS_USART_MODE(mode));
assert_param(IS_USART_HARDWARE_FLOW_CONTROL(hardwareFlowControl));
dev->tx_timeout = tx_timeout;
dev->txbusy = 0;
dev->usetxrb = 1;
dev->use_timeout = 0;
/* Disable USARTx */
USART_Cmd(dev->USARTx, DISABLE);
/* Enables the USART's 8x oversampling mode. */
USART_OverSampling8Cmd(dev->USARTx, ENABLE);
USART_ClockInitTypeDef USART_InitClock;
USART_ClockStructInit(&USART_InitClock);
USART_ClockInit(dev->USARTx, &USART_InitClock);
USART_InitTypeDef USART_config;
USART_StructInit(&USART_config);
USART_config.USART_BaudRate = baudRate;
USART_config.USART_WordLength = wordLength;
USART_config.USART_StopBits = stopBits;
USART_config.USART_Parity = parity;
USART_config.USART_Mode = mode;
USART_config.USART_HardwareFlowControl = hardwareFlowControl;
USART_Init(dev->USARTx, &USART_config);
NVIC_InitTypeDef NVIC_InitStructure;
/* Configure the NVIC Preemption Priority Bits */
//NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = dev->irq;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(dev->USARTx, USART_IT_PE, DISABLE);
USART_ITConfig(dev->USARTx, USART_IT_IDLE, DISABLE);
USART_ITConfig(dev->USARTx, USART_IT_LBD, DISABLE);
if (IS_USART_1236_PERIPH(dev->USARTx))
USART_ITConfig(dev->USARTx, USART_IT_CTS, DISABLE);
USART_ITConfig(dev->USARTx, USART_IT_ERR, DISABLE);
/* Enable USART2 Rx request */
USART_ITConfig(dev->USARTx, USART_IT_RXNE, ENABLE);
USART_ClearFlag(dev->USARTx, USART_FLAG_RXNE);
USART_ITConfig(dev->USARTx, USART_IT_TC, DISABLE);
USART_ITConfig(dev->USARTx, USART_IT_TXE, ENABLE);
USART_ClearFlag(dev->USARTx, USART_FLAG_TC);
/*
USART_ITConfig(dev->USARTx, USART_IT_RXNE, ENABLE);
USART_ITConfig(dev->USARTx, USART_IT_PE, ENABLE);
USART_ITConfig(dev->USARTx, USART_IT_ERR, ENABLE);
*/
}
int deviceInit(void)
{
int ret =0;
USART_InitTypeDef usartInfo;
// EXTI_InitTypeDef extiInfo;
GPIO_InitTypeDef gpioInfo;
NVIC_InitTypeDef nvicInfo;
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA |RCC_APB2Periph_GPIOB | RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2 | RCC_APB1Periph_USART3, ENABLE);
gpioInfo.GPIO_Pin = GPIO_Pin_10 | GPIO_Pin_3;
gpioInfo.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &gpioInfo);
gpioInfo.GPIO_Pin = GPIO_Pin_11;
gpioInfo.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &gpioInfo);
gpioInfo.GPIO_Pin = GPIO_Pin_9 | GPIO_Pin_2;
gpioInfo.GPIO_Speed = GPIO_Speed_50MHz;
gpioInfo.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &gpioInfo);
gpioInfo.GPIO_Pin = GPIO_Pin_10;
gpioInfo.GPIO_Speed = GPIO_Speed_50MHz;
gpioInfo.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &gpioInfo);
USART_DeInit(USART1);
USART_DeInit(USART2);
USART_DeInit(USART3);
USART_StructInit(&usartInfo);
usartInfo.USART_BaudRate = 115200;
usartInfo.USART_WordLength = 8;
USART_Init(USART1, &usartInfo);
USART_Init(USART2, &usartInfo);
USART_Init(USART3, &usartInfo);
USART_Cmd(USART1, ENABLE);
USART_Cmd(USART2, ENABLE);
USART_Cmd(USART3, ENABLE);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
while( USART_GetFlagStatus(USART1,USART_FLAG_TC)!= SET);
while( USART_GetFlagStatus(USART2,USART_FLAG_TC)!= SET);
while( USART_GetFlagStatus(USART3,USART_FLAG_TC)!= SET);
// SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);
// SysTick_Config(72000000 /100);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
nvicInfo.NVIC_IRQChannel = USART1_IRQn;
nvicInfo.NVIC_IRQChannelPreemptionPriority = 0;
nvicInfo.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&nvicInfo);
return ret;
}
void telemetryInit(uint32_t baudrate)
{
GPIO_InitTypeDef GPIO_InitStructure;
USART_InitTypeDef USART_InitStructure;
DMA_InitTypeDef DMA_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
USART_StructInit(&USART_InitStructure);
DMA_StructInit(&DMA_InitStructure);
//RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
//RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA2, ENABLE);
//RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
GPIO_InitStructure.GPIO_Pin = UART1_TX_PIN | UART1_RX_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
//GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_PinAFConfig(UART1_GPIO, UART1_TX_PINSOURCE, GPIO_AF_USART1);
GPIO_PinAFConfig(UART1_GPIO, UART1_RX_PINSOURCE, GPIO_AF_USART1);
GPIO_Init(UART1_GPIO, &GPIO_InitStructure);
// DMA TX Interrupt
NVIC_InitStructure.NVIC_IRQChannel = DMA2_Stream7_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_InitStructure.USART_BaudRate = baudrate;
//USART_InitStructure.USART_WordLength = USART_WordLength_8b;
//USART_InitStructure.USART_StopBits = USART_StopBits_1;
//USART_InitStructure.USART_Parity = USART_Parity_No;
//USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
//USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_Init(USART1, &USART_InitStructure);
// Receive DMA into a circular buffer
DMA_DeInit(DMA2_Stream5);
DMA_InitStructure.DMA_Channel = DMA_Channel_4;
DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)rx1Buffer;
//DMA_InitStructure.DMA_DIR = DMA_DIR_PeripheralToMemory;
DMA_InitStructure.DMA_BufferSize = UART1_BUFFER_SIZE;
//DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
//DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Circular;
DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
//DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
//DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
//DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
//DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream5, &DMA_InitStructure);
DMA_Cmd(DMA2_Stream5, ENABLE);
USART_DMACmd(USART1, USART_DMAReq_Rx, ENABLE);
rx1DMAPos = DMA_GetCurrDataCounter(DMA2_Stream5);
// Transmit DMA
DMA_DeInit(DMA2_Stream7);
//DMA_InitStructure.DMA_Channel = DMA_Channel_4;
//DMA_InitStructure.DMA_PeripheralBaseAddr = (uint32_t)&USART1->DR;
DMA_InitStructure.DMA_Memory0BaseAddr = (uint32_t)tx1Buffer;
DMA_InitStructure.DMA_DIR = DMA_DIR_MemoryToPeripheral;
//DMA_InitStructure.DMA_BufferSize = UART_BUFFER_SIZE;
//DMA_InitStructure.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
//DMA_InitStructure.DMA_MemoryInc = DMA_MemoryInc_Enable;
//DMA_InitStructure.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
//DMA_InitStructure.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
DMA_InitStructure.DMA_Mode = DMA_Mode_Normal;
//DMA_InitStructure.DMA_Priority = DMA_Priority_Medium;
//DMA_InitStructure.DMA_FIFOMode = DMA_FIFOMode_Disable;
//DMA_InitStructure.DMA_FIFOThreshold = DMA_FIFOThreshold_1QuarterFull;
//DMA_InitStructure.DMA_MemoryBurst = DMA_MemoryBurst_Single;
//DMA_InitStructure.DMA_PeripheralBurst = DMA_PeripheralBurst_Single;
DMA_Init(DMA2_Stream7, &DMA_InitStructure);
DMA_SetCurrDataCounter(DMA2_Stream7, 0);
DMA_ITConfig(DMA2_Stream7, DMA_IT_TC, ENABLE);
USART_DMACmd(USART1, USART_DMAReq_Tx, ENABLE);
USART_Cmd(USART1, ENABLE);
//evrRegisterListener(telemetryListenerCB);
}
/*******************************************************************************
* Function Name : uart_open
* Description : Open the UART port communication
* Input : - Uart: Select the USART or the UART peripheral
* : - BaudRate: Baud rate configuration
* : - DmaBufSize: DMA buffer size
* : - RxBufSize: Receive buffer size
* : - TxBufSize: Transmit buffer size
* : - HwCtrl: Hardware control options
* : - Gpio: GPIO used for hardware control
* Output : None
* Return : 0 if OK, -1 in case of error
*******************************************************************************/
int uart_open (const _Uart_Descriptor *Uart, u32 BaudRate, u8 DmaBufSize, u16 RxBufSize, u16 TxBufSize, u8 HwCtrl, const _Gpio_Descriptor *Gpio)
{
USART_InitTypeDef usart_init_structure;
DMA_InitTypeDef dma_init_structure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Init control variables and bufers */
if (*Uart->Ctrl) _sys_free(*Uart->Ctrl);
if ((*Uart->Ctrl = _sys_malloc(sizeof(_Uart_Ctrl) + DmaBufSize + RxBufSize + TxBufSize)) == 0) return(-1);
memset(*Uart->Ctrl, 0, sizeof(_Uart_Ctrl));
(*Uart->Ctrl)->DmaBufPtr = (char *)*Uart->Ctrl + sizeof(_Uart_Ctrl);
(*Uart->Ctrl)->DmaBufSize = DmaBufSize;
(*Uart->Ctrl)->iDma = DmaBufSize;
(*Uart->Ctrl)->RxBufSize = RxBufSize;
(*Uart->Ctrl)->RxBufPtr = (*Uart->Ctrl)->DmaBufPtr + (*Uart->Ctrl)->DmaBufSize;
(*Uart->Ctrl)->TxBufSize = TxBufSize;
(*Uart->Ctrl)->TxBufPtr = (*Uart->Ctrl)->RxBufPtr + (*Uart->Ctrl)->RxBufSize;
(*Uart->Ctrl)->HwCtrl = HwCtrl;
(*Uart->Ctrl)->Gpio = Gpio;
#ifdef _UART_OS_SUPPORT
(*Uart->Ctrl)->Event = SYS_EVT_INCOMING_DATA;
(*Uart->Ctrl)->Task = sys_task_self();
#endif
/* Enable peripheral clock */
(*Uart->RCC_APBxPeriphClockCmd)(Uart->RCC_APBxPeriph, ENABLE);
/* Init GPIO */
gpio_set_function(Uart->TxGpio, Uart->GPIO_AF);
gpio_set_function(Uart->RxGpio, Uart->GPIO_AF);
gpio_set_mode(Uart->TxGpio, GPIO_MODE_AF, 0);
gpio_set_mode(Uart->RxGpio, GPIO_MODE_AF, 0);
if ((*Uart->Ctrl)->HwCtrl & (UART_HW_FLOW_CTRL_RX | UART_HALF_DUPLEX)) gpio_set_mode((*Uart->Ctrl)->Gpio, GPIO_FCT_OUT, 0);
/* Init UART peripheral */
USART_DeInit(Uart->UARTx);
USART_StructInit(&usart_init_structure);
usart_init_structure.USART_BaudRate = BaudRate;
if ((*Uart->Ctrl)->HwCtrl & UART_HW_FLOW_CTRL_TX) usart_init_structure.USART_HardwareFlowControl = USART_HardwareFlowControl_CTS;
USART_Init(Uart->UARTx, &usart_init_structure);
/* Configure DMA (if used) */
if ((*Uart->Ctrl)->DmaBufSize)
{
DMA_DeInit(Uart->DMAy_Streamx);
DMA_StructInit(&dma_init_structure);
dma_init_structure.DMA_Channel = Uart->DMA_Channel;
dma_init_structure.DMA_PeripheralBaseAddr = (u32)&Uart->UARTx->DR;
dma_init_structure.DMA_Memory0BaseAddr = (u32)(*Uart->Ctrl)->DmaBufPtr;
dma_init_structure.DMA_BufferSize = (*Uart->Ctrl)->DmaBufSize;
dma_init_structure.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma_init_structure.DMA_Mode = DMA_Mode_Circular;
dma_init_structure.DMA_Priority = DMA_Priority_Medium;
dma_init_structure.DMA_FIFOMode = DMA_FIFOMode_Disable;
DMA_Init(Uart->DMAy_Streamx, &dma_init_structure);
DMA_ITConfig(Uart->DMAy_Streamx, DMA_IT_TC | DMA_IT_HT, ENABLE);
DMA_Cmd(Uart->DMAy_Streamx, ENABLE);
NVIC_EnableIRQ(Uart->DMAx_IRQn);
//
//NVIC_SetPriority((IRQn_Type)Uart->DMAx_IRQn, (uint32_t)129);
NVIC_SetPriority((IRQn_Type)Uart->DMAx_IRQn, (1 << __NVIC_PRIO_BITS) -3);
//
USART_DMACmd(Uart->UARTx, USART_DMAReq_Rx, ENABLE);
USART_ITConfig(Uart->UARTx, USART_IT_IDLE, ENABLE);
}
else USART_ITConfig(Uart->UARTx, USART_IT_RXNE, ENABLE);
/* Enable IT and start peripheral */
//NVIC_InitStructure.NVIC_IRQChannel = Uart->IRQn; // we want to configure the USART1 interrupts
//NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;// this sets the priority group of the USART1 interrupts
//NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0; // this sets the subpriority inside the group
//NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE; // the USART1 interrupts are globally enabled
//NVIC_Init(&NVIC_InitStructure);
//
//NVIC_SetPriority((IRQn_Type)Uart->IRQn, (uint32_t)129);
NVIC_SetPriority((IRQn_Type)Uart->IRQn, (1 << __NVIC_PRIO_BITS) -4);
//
USART_ITConfig(Uart->UARTx, USART_IT_TC, ENABLE);
NVIC_EnableIRQ(Uart->IRQn);
USART_Cmd(Uart->UARTx, ENABLE);
while (!gpio_read(Uart->TxGpio));
return(0);
}
int serial_open(char *name, unsigned int *subdevice)
{
unsigned int port;
unsigned int baudrate;
USART_InitTypeDef USART_config;
GPIO_InitTypeDef GPIO_config;
errno_r = 0;
// Look up serial port number
port = serial_name_to_port(name);
if (port < 0) return port;
// Pass up port number, if requested
if (subdevice != NULL)
*subdevice = port;
// Extract baud rate from device name
baudrate = atoi(name+5);
// Turn on USART
switch (port)
{
case 0 :
#ifdef OLIMEX_STM32_P107
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_6;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_7;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_config);
// Remap USART1 pins
GPIO_PinRemapConfig(GPIO_Remap_USART1, ENABLE);
#else
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_9;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_10;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_config);
#endif
break;
case 1 :
#ifdef OLIMEX_STM32_P107
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_5;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOD, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_6;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_config);
// Remap USART2 pins
GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);
#else
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_2;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_3;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_config);
#endif
break;
case 2 :
#ifdef OLIMEX_STM32_P107
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOD|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_8;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOD, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_9;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOD, &GPIO_config);
// Remap USART3 pins
GPIO_PinRemapConfig(GPIO_FullRemap_USART3, ENABLE);
#else
// Turn on peripheral clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB|RCC_APB2Periph_AFIO, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// Configure TX pin
GPIO_config.GPIO_Pin = GPIO_Pin_10;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOB, &GPIO_config);
// Configure RX pin
GPIO_config.GPIO_Pin = GPIO_Pin_11;
GPIO_config.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_config.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOB, &GPIO_config);
#endif
break;
default :
errno_r = ENODEV;
return -1;
}
// Configure USART
USART_StructInit(&USART_config);
USART_config.USART_BaudRate = baudrate;
USART_Init(UARTS[port], &USART_config);
// Enable USART
USART_Cmd(UARTS[port], ENABLE);
return 0;
}
/*************************************************************************
* Function Name: UartInit
* Parameters: Int32U IrqSlot
*
* Return: Boolean
*
* Description: Init UART
*
*************************************************************************/
Boolean UartInit(UartNum_t Uart,Int32U IrqSlot)
{
volatile Int8U Tmp;
USART_InitTypeDef UART_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
USART_StructInit(&UART_InitStructure);
UART_InitStructure.USART_Parity = USART_Parity_No;
switch(Uart)
{
case UART_1:
pUart1RxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart1RxFifo == NULL)
{
return(FALSE);
}
pUart1TxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart1TxFifo == NULL)
{
free(pUart1RxFifo);
return(FALSE);
}
// Init receive and transmit FIFOs
pUart1RxFifo->PopIndx = pUart1RxFifo->PushIndx = \
pUart1TxFifo->PopIndx = pUart1TxFifo->PushIndx = 0;
// Release reset and enable clock
USART_DeInit(USART1);
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// GPIO Init
// Enable GPIO clock and release reset
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,
ENABLE);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA,
DISABLE);
GPIO_PinRemapConfig(GPIO_Remap_USART1,DISABLE);
// Assign PA9 to UART1 (Tx)
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Assign PA10 to UART1 (Rx)
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Init UART1
USART_Init(USART1,&UART_InitStructure);
// Enable and configure the priority of the UART1 Update IRQ Channel
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = UART1_INTR_PRI;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ClearFlag(USART1, USART_FLAG_CTS | USART_FLAG_LBD | USART_FLAG_TXE |
USART_FLAG_TC | USART_FLAG_RXNE | USART_FLAG_IDLE |
USART_FLAG_ORE | USART_FLAG_NE | USART_FLAG_FE |
USART_FLAG_PE);
// Enable UART1 interrupts
USART_ITConfig(USART1,USART_IT_PE ,ENABLE);
USART_ITConfig(USART1,USART_IT_TC ,DISABLE);
USART_ITConfig(USART1,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART1,USART_IT_IDLE,DISABLE);
USART_ITConfig(USART1,USART_IT_LBD ,DISABLE);
USART_ITConfig(USART1,USART_IT_CTS ,DISABLE);
USART_ITConfig(USART1,USART_IT_ERR ,DISABLE);
// Enable the UART1
USART_Cmd(USART1, ENABLE);
break;
case UART_2:
pUart2RxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart2RxFifo == NULL)
{
return(FALSE);
}
pUart2TxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart2TxFifo == NULL)
{
free(pUart2RxFifo);
return(FALSE);
}
// Init receive and transmit FIFOs
pUart2RxFifo->PopIndx = pUart2RxFifo->PushIndx = \
pUart2TxFifo->PopIndx = pUart2TxFifo->PushIndx = 0;
// Release reset and enable clock
USART_DeInit(USART2);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
// GPIO Init
// Enable GPIO clock and release reset
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA,
ENABLE);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOA,
DISABLE);
GPIO_PinRemapConfig(GPIO_Remap_USART2,DISABLE);
// Assign PA2 to UART2 (Tx)
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_2;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Assign PA3 to UART2 (Rx)
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Init UART2
USART_Init(USART2,&UART_InitStructure);
// Enable and configure the priority of the UART2 Update IRQ Channel
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = UART2_INTR_PRI;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ClearFlag(USART2, USART_FLAG_CTS | USART_FLAG_LBD | USART_FLAG_TXE |
USART_FLAG_TC | USART_FLAG_RXNE | USART_FLAG_IDLE |
USART_FLAG_ORE | USART_FLAG_NE | USART_FLAG_FE |
USART_FLAG_PE);
// Enable UART2 interrupts
USART_ITConfig(USART2,USART_IT_PE ,ENABLE);
USART_ITConfig(USART2,USART_IT_TXE ,ENABLE);
USART_ITConfig(USART2,USART_IT_TC ,DISABLE);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART2,USART_IT_IDLE,DISABLE);
USART_ITConfig(USART2,USART_IT_LBD ,DISABLE);
USART_ITConfig(USART2,USART_IT_CTS ,DISABLE);
USART_ITConfig(USART2,USART_IT_ERR ,DISABLE);
// Enable the UART2
USART_Cmd(USART2, ENABLE);
break;
case UART_3:
pUart3RxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart3RxFifo == NULL)
{
return(FALSE);
}
pUart3TxFifo = (pUartFifo_t)malloc(sizeof(UartFifo_t));
if(pUart3TxFifo == NULL)
{
free(pUart3RxFifo);
return(FALSE);
}
// Init receive and transmit FIFOs
pUart3RxFifo->PopIndx = pUart3RxFifo->PushIndx = \
pUart3TxFifo->PopIndx = pUart3TxFifo->PushIndx = 0;
// Release reset and enable clock
USART_DeInit(USART3);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART3, ENABLE);
// GPIO Init
// Enable GPIO clock and release reset
RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO,
ENABLE);
RCC_APB2PeriphResetCmd(RCC_APB2Periph_GPIOC | RCC_APB2Periph_AFIO,
DISABLE);
GPIO_PinRemapConfig(GPIO_PartialRemap_USART3,ENABLE);
// Assign PC10 to UART3 (Tx)
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// Assign PC11 to UART3 (Rx)
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_Init(GPIOC, &GPIO_InitStructure);
// Init UART3
USART_Init(USART3,&UART_InitStructure);
// Enable and configure the priority of the UART3 Update IRQ Channel
NVIC_InitStructure.NVIC_IRQChannel = USART3_IRQChannel;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = UART3_INTR_PRI;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_ClearFlag(USART3, USART_FLAG_CTS | USART_FLAG_LBD | USART_FLAG_TXE |
USART_FLAG_TC | USART_FLAG_RXNE | USART_FLAG_IDLE |
USART_FLAG_ORE | USART_FLAG_NE | USART_FLAG_FE |
USART_FLAG_PE);
// Enable UART3 interrupts
USART_ITConfig(USART3,USART_IT_PE ,ENABLE);
USART_ITConfig(USART3,USART_IT_TXE ,DISABLE);
USART_ITConfig(USART3,USART_IT_TC ,DISABLE);
USART_ITConfig(USART3,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART3,USART_IT_IDLE,DISABLE);
USART_ITConfig(USART3,USART_IT_LBD ,DISABLE);
USART_ITConfig(USART3,USART_IT_CTS ,DISABLE);
USART_ITConfig(USART3,USART_IT_ERR ,DISABLE);
// Enable the UART3
USART_Cmd(USART3, ENABLE);
break;
default:
return(FALSE);
}
return(TRUE);
}
void initUart() {
RCC_APB2PeriphClockCmd(
RCC_APB2Periph_USART1 | RCC_APB2Periph_GPIOA | RCC_APB2Periph_AFIO,
ENABLE);
GPIO_InitTypeDef GPIO_InitStructure;
GPIO_StructInit(&GPIO_InitStructure);
// Transmit pin.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9,
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Receive pin.
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Default clock structure works for us.
USART_ClockInitTypeDef USART_ClockInitStructure;
USART_ClockStructInit(&USART_ClockInitStructure);
USART_ClockInit(USART1, &USART_ClockInitStructure);
// Default USART structure works for us.
USART_InitTypeDef USART_InitStructure;
USART_StructInit(&USART_InitStructure);
USART_Init(USART1, &USART_InitStructure);
USART_Cmd(USART1, ENABLE);
// // Disable data pushes from GPS.
// usartTx("$PUBX,40,GGA,0,0,0,0*5A\r\n");
// usartTx("$PUBX,40,GGA,0,0,0,0*5A\r\n"); // Repeat first; timing work around.
// usartTx("$PUBX,40,GLL,0,0,0,0*5C\r\n");
// usartTx("$PUBX,40,GSA,0,0,0,0*4E\r\n");
// usartTx("$PUBX,40,GSV,0,0,0,0*59\r\n");
// usartTx("$PUBX,40,RMC,0,0,0,0*47\r\n");
// usartTx("$PUBX,40,VTG,0,0,0,0*5E\r\n");
// // Keep just the recommended minimum flowing, slowly.
// usartTx("$PUBX,40,GGA,0,15,0,0*6E\r\n");
// usartTx("$PUBX,40,GGA,0,15,0,0*6E\r\n"); // Repeat first; timing work around.
// usartTx("$PUBX,40,GLL,0,15,0,0*68\r\n");
// usartTx("$PUBX,40,GSA,0,15,0,0*7A\r\n");
// usartTx("$PUBX,40,GSV,0,15,0,0*6D\r\n");
// usartTx("$PUBX,40,RMC,0,15,0,0*73\r\n");
// usartTx("$PUBX,40,VTG,0,15,0,0*6A\r\n");
// The first character is sometimes (always?) dropped, so send a few
// buffer characters that can be safely discarded.
gpsTxChar('\r'); gpsTxChar('\n');
gpsTxChar('\r'); gpsTxChar('\n');
// Disable all data pushes from GPS.
gpsSetPushFreq("DTM", 0);
gpsSetPushFreq("GBS", 0);
gpsSetPushFreq("GGA", 0);
gpsSetPushFreq("GLL", 0);
gpsSetPushFreq("GPQ", 0);
gpsSetPushFreq("GRS", 0);
gpsSetPushFreq("GSA", 0);
gpsSetPushFreq("GST", 0);
gpsSetPushFreq("GSV", 0);
gpsSetPushFreq("RMC", 0);
gpsSetPushFreq("THS", 0);
gpsSetPushFreq("VTG", 0);
// Except the one which tells us what time it is.
gpsSetPushFreq("ZDA", 2);
// Now that it won't be noisy, enable the RX interrupt.
NVIC_InitTypeDef NVIC_InitStructure = {
.NVIC_IRQChannel = USART1_IRQn,
.NVIC_IRQChannelPreemptionPriority = 1,
.NVIC_IRQChannelSubPriority = 1,
.NVIC_IRQChannelCmd = ENABLE,
};
NVIC_Init(&NVIC_InitStructure);
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
}
// \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ // \\ //
void RTC_IRQHandler(void) {
if (RTC_GetFlagStatus(RTC_FLAG_SEC) != RESET) {
RTC_ClearFlag(RTC_FLAG_SEC);
gSecondFlag = 1;
gSeconds = RTC_GetCounter();
}
}
void SysTick_Handler(void) {
gBlinkTick++;
if (gBlinkTick > 125) {
gBlinkTick = 0;
gBlinkStatus = !gBlinkStatus;
}
uint8_t btnPressed = 0;
uint16_t btns = GPIO_ReadInputData(BTN_PORT) & BTN_ALL_PINS;
if ((btns & BTN_MAPLE_PIN) == BTN_MAPLE_PIN) btnPressed = BTN_MAPLE;
else if ((btns & BTN_DIM_PIN) == 0) btnPressed = BTN_DIM;
else if ((btns & BTN_DN_PIN) == 0) btnPressed = BTN_DOWN;
else if ((btns & BTN_UP_PIN) == 0) btnPressed = BTN_UP;
else if ((btns & BTN_SET_PIN) == 0) btnPressed = BTN_SET;
if (btnPressed && gButtonPending == btnPressed) {
if (gButtonDebounce > 10) {
// Button already activated, still held, do nothing.
} else if (gButtonDebounce == 10) {
// Transition! Set pressed button.
gButtonPressed = btnPressed;
gButtonDebounce++;
} else {
gButtonDebounce++;
}
} else {
gButtonDebounce = 0;
gButtonPending = btnPressed;
}
if (gDpTick > 0) {
gDpTick--;
if (gDpTick == 0) {
GPIO_WriteBit(DP_PORT, DP_PIN, RESET);
}
}
}
static void stm32_params2init(const struct uart_params *params, USART_InitTypeDef *USART_InitStruct) {
/* TODO */
USART_StructInit(USART_InitStruct);
USART_InitStruct->USART_BaudRate = params->baud_rate;
}
static void hardware_init(void) {
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
EXTI_InitTypeDef EXTI_InitStructure;
USART_InitTypeDef USART_InitStructure;
/* Configure GPIO */
GPIO_InitStructure.GPIO_Pin = PLAY_BUTTON_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = HIT_BUTTON_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
GPIO_SetBits(LAMP_PORT, LAMP_PIN);
GPIO_InitStructure.GPIO_Pin = LAMP_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LAMP_PORT, &GPIO_InitStructure);
GPIO_SetBits(LOCK_PORT, LOCK_PIN);
GPIO_InitStructure.GPIO_Pin = LOCK_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
GPIO_Init(LOCK_PORT, &GPIO_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =
configLIBRARY_KERNEL_INTERRUPT_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
NVIC_InitStructure.NVIC_IRQChannel = EXTI2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =
configLIBRARY_KERNEL_INTERRUPT_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);
EXTI_InitStructure.EXTI_Line = EXTI_Line0;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource2);
EXTI_InitStructure.EXTI_Line = EXTI_Line2;
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Enable USART clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
/* Configure USART1 Tx (PA.09) as alternate function push-pull */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* Configure USART1 Rx (PA.10) as input floating */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN_FLOATING;
GPIO_Init(GPIOA, &GPIO_InitStructure);
/* USART configured using USART_StructInit():
- BaudRate = 9600 baud
- Word Length = 8 Bits
- One Stop Bit
- No parity
- Hardware flow control disabled (RTS and CTS signals)
- Receive and transmit enabled
*/
USART_StructInit(&USART_InitStructure);
/* Configure USART1 */
USART_Init(USART1, &USART_InitStructure);
USART_ITConfig( USART1, USART_IT_RXNE, ENABLE );
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority =
configLIBRARY_KERNEL_INTERRUPT_PRIORITY;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init( &NVIC_InitStructure );
USART_Cmd( USART1, ENABLE );
}
/**
* @brief Main program
* @param None
* @retval None
*/
int main(void)
{
TIM_TimeBaseInitTypeDef TIM_TimeBaseStructure;
TIM_OCInitTypeDef TIM_OCInitStructure;
BufferInit(&TxRingBuf);
BufferInit(&RxRingBuf);
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32f401xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32f4xx.c file
*/
/* TIM Configuration */
//TIM_Config();
/* -----------------------------------------------------------------------
TIM3 Configuration: generate 4 PWM signals with 4 different duty cycles.
In this example TIM3 input clock (TIM3CLK) is set to 2 * APB1 clock (PCLK1),
since APB1 prescaler is different from 1.
TIM3CLK = 2 * PCLK1
PCLK1 = HCLK / 4
=> TIM3CLK = HCLK / 2 = SystemCoreClock /2
To get TIM3 counter clock at 14 MHz, the prescaler is computed as follows:
Prescaler = (TIM3CLK / TIM3 counter clock) - 1
Prescaler = ((SystemCoreClock /2) /14 MHz) - 1
To get TIM3 output clock at 21 KHz, the period (ARR)) is computed as follows:
ARR = (TIM3 counter clock / TIM3 output clock) - 1
= 665
TIM3 Channel1 duty cycle = (TIM3_CCR1/ TIM3_ARR)* 100 = 50%
TIM3 Channel2 duty cycle = (TIM3_CCR2/ TIM3_ARR)* 100 = 37.5%
TIM3 Channel3 duty cycle = (TIM3_CCR3/ TIM3_ARR)* 100 = 25%
TIM3 Channel4 duty cycle = (TIM3_CCR4/ TIM3_ARR)* 100 = 12.5%
Note:
SystemCoreClock variable holds HCLK frequency and is defined in system_stm32f4xx.c file.
Each time the core clock (HCLK) changes, user had to call SystemCoreClockUpdate()
function to update SystemCoreClock variable value. Otherwise, any configuration
based on this variable will be incorrect.
----------------------------------------------------------------------- */
//===========================================================
//UART config
//===========================================================
USART_InitTypeDef UartHandle;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
USART_ClockInitTypeDef USART_ClockInitStruct;
RCC_ClocksTypeDef RCC_Clocks;
RCC_GetClocksFreq(&RCC_Clocks);
SysTick_Config(RCC_Clocks.HCLK_Frequency / 100);
USART_StructInit(&UartHandle);
USART_ClockStructInit(&USART_ClockInitStruct);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD, ENABLE);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART2);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART2);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5 | GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOD, &GPIO_InitStructure);
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
GPIO_Init(GPIOD, &GPIO_InitStructure);
USART_Init(USART2,&UartHandle);
USART_ClockInit(USART2,&USART_ClockInitStruct);
USART_ITConfig(USART2,USART_IT_RXNE,ENABLE);
USART_ITConfig(USART2, USART_IT_TC,ENABLE);
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
NVIC_InitStructure.NVIC_IRQChannel = USART2_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0x01;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
USART_Cmd(USART2, ENABLE);
Delay(40);
Sevenseg_Setup();
Delay(40);
USART_SendData(USART2,0xaaaa);
//GPIO_SetBits(GPIOB,GPIO_Pin_0 | GPIO_Pin_1);
GPIO_SetBits(GPIOD,GPIO_Pin_0);
//======================================================
//----------------------------------------------------
//========================================================
// /* Compute the prescaler value */
// PrescalerValue = (uint16_t) (SystemCoreClock / 1000000) - 1;
//
// /* Time base configuration */
// TIM_TimeBaseStructure.TIM_Period = 5000;
// TIM_TimeBaseStructure.TIM_Prescaler = PrescalerValue;
// TIM_TimeBaseStructure.TIM_ClockDivision = 0;
// TIM_TimeBaseStructure.TIM_CounterMode = TIM_CounterMode_Up;
//
// TIM_TimeBaseInit(TIM3, &TIM_TimeBaseStructure);
//
// /* PWM1 Mode configuration: Channel1 */
// TIM_OCInitStructure.TIM_OCMode = TIM_OCMode_PWM1;
// TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
// TIM_OCInitStructure.TIM_Pulse = CCR1_Val;
// TIM_OCInitStructure.TIM_OCPolarity = TIM_OCPolarity_High;
//
// TIM_OC1Init(TIM3, &TIM_OCInitStructure);
//
// TIM_OC1PreloadConfig(TIM3, TIM_OCPreload_Enable);
//
//
// /* PWM1 Mode configuration: Channel2 */
// TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
// TIM_OCInitStructure.TIM_Pulse = CCR2_Val;
//
// TIM_OC2Init(TIM3, &TIM_OCInitStructure);
//
// TIM_OC2PreloadConfig(TIM3, TIM_OCPreload_Enable);
//
// /* PWM1 Mode configuration: Channel3 */
// TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
// TIM_OCInitStructure.TIM_Pulse = CCR3_Val;
//
// TIM_OC3Init(TIM3, &TIM_OCInitStructure);
//
// TIM_OC3PreloadConfig(TIM3, TIM_OCPreload_Enable);
//
// /* PWM1 Mode configuration: Channel4 */
// TIM_OCInitStructure.TIM_OutputState = TIM_OutputState_Enable;
// TIM_OCInitStructure.TIM_Pulse = CCR4_Val;
//
// TIM_OC4Init(TIM3, &TIM_OCInitStructure);
//
// TIM_OC4PreloadConfig(TIM3, TIM_OCPreload_Enable);
//
// TIM_ARRPreloadConfig(TIM3, ENABLE);
//
// /* TIM3 enable counter */
// TIM_Cmd(TIM3, ENABLE);
int bts = 0;
Sevenseg_Send(0x33);
while (1)
{
if(RxRingBuf.length > 10) {
int i;
int ntosend = RxRingBuf.length;
for(i = 0; i < ntosend;i++)
{
bts = BufferRead(&RxRingBuf);
//if(bts == -1) break;
USART2_SendByte(bts);
}
/*
while(TxRingBuf.length > 0)
{
if((TxRingBuf.length > 0) && (USART_GetFlagStatus(USART2, USART_FLAG_TXE) == SET)) {
BufferSend(&TxRingBuf);
}
}
*/
}
/*
GPIO_ResetBits(GPIOB,GPIO_Pin_0 | GPIO_Pin_1);
GPIO_ResetBits(GPIOA,GPIO_Pin_0);
//GPIO_ToggleBits(GPIOB, GPIO_Pin_0);
GPIO_SetBits(GPIOB,GPIO_Pin_0 | GPIO_Pin_1);
GPIO_SetBits(GPIOA,GPIO_Pin_0);
*/
//USART_SendData(USART2,0x0051);
//USART_SendData(USART2,0x003b);
}
}
int do_set_rs232cfg(struct rs232_param *rs232cfg, int intno)
{
USART_TypeDef *uartbase;
USART_InitTypeDef USART_InitStructure;
if (NULL==rs232cfg)
return RT_ERROR;
USART_StructInit(&USART_InitStructure);
switch (rs232cfg->databits) {
case 8:
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
break;
case 9:
USART_InitStructure.USART_WordLength = USART_WordLength_9b;
break;
default:
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
break;
}
switch (rs232cfg->stopbits) {
case 1:
USART_InitStructure.USART_StopBits = USART_StopBits_1;
break;
case 2:
USART_InitStructure.USART_StopBits = USART_StopBits_2;
break;
default:
USART_InitStructure.USART_StopBits = USART_StopBits_1;
break;
}
switch (rs232cfg->paritybit) {
case 0:
USART_InitStructure.USART_Parity = USART_Parity_No;
break;
case 1:
USART_InitStructure.USART_Parity = USART_Parity_Even;
break;
case 2:
USART_InitStructure.USART_Parity = USART_Parity_Odd;
break;
default:
USART_InitStructure.USART_Parity = USART_Parity_No;
break;
}
/* 应该检查数据的合法性, 现在没有做检查!!!!! */
USART_InitStructure.USART_BaudRate = rs232cfg->baudrate;
switch (intno) {
case 0:
uartbase = USART1;
break;
case 1:
uartbase = USART2;
break;
default:
return RT_ERROR;
}
USART_Init(uartbase, &USART_InitStructure);
return RT_EOK;
}
USART2Class::USART2Class(){
m_queue = xQueueCreate(TX_BUFFERSIZE,sizeof(char));
vQueueAddToRegistry(m_queue,"u2tx");
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOD,ENABLE);
GPIO_InitTypeDef pd5def;
GPIO_StructInit(&pd5def);
pd5def.GPIO_Pin = GPIO_Pin_5;
pd5def.GPIO_Mode = GPIO_Mode_AF;
pd5def.GPIO_OType = GPIO_OType_PP;
pd5def.GPIO_PuPd = GPIO_PuPd_NOPULL;
pd5def.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOD,&pd5def);
GPIO_InitTypeDef pd6def;
GPIO_StructInit(&pd6def);
pd6def.GPIO_Pin = GPIO_Pin_6;
pd6def.GPIO_Mode = GPIO_Mode_AF;
pd6def.GPIO_PuPd = GPIO_PuPd_NOPULL;
pd6def.GPIO_Speed = GPIO_Speed_100MHz;
GPIO_Init(GPIOD,&pd6def);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource5, GPIO_AF_USART2);
GPIO_PinAFConfig(GPIOD, GPIO_PinSource6, GPIO_AF_USART2);
USART_InitTypeDef usart2;
RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2,ENABLE);
USART_StructInit(&usart2);
usart2.USART_BaudRate = 115200;
usart2.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
usart2.USART_Mode = USART_Mode_Tx | USART_Mode_Rx;
usart2.USART_Parity = USART_Parity_No;
usart2.USART_StopBits = USART_StopBits_1;
usart2.USART_WordLength = USART_WordLength_8b;
USART_Init(USART2,&usart2);
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_DMA1,ENABLE);
DMA_InitTypeDef dma1_6;
DMA_StructInit(&dma1_6);
dma1_6.DMA_PeripheralBaseAddr = (uint32_t)&(USART2->DR);
dma1_6.DMA_Memory0BaseAddr = (uint32_t)m_txBuf;
dma1_6.DMA_DIR = DMA_DIR_MemoryToPeripheral;
dma1_6.DMA_BufferSize = 1;
dma1_6.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
dma1_6.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma1_6.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
dma1_6.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
dma1_6.DMA_Mode = DMA_Mode_Normal;
dma1_6.DMA_Priority = DMA_Priority_High;
dma1_6.DMA_Channel = DMA_Channel_4;
DMA_Init(DMA1_Stream6,&dma1_6);
DMA_InitTypeDef dma1_5;
DMA_StructInit(&dma1_5);
dma1_5.DMA_PeripheralBaseAddr = (uint32_t)&(USART2->DR);
dma1_5.DMA_Memory0BaseAddr = (uint32_t)m_rxBuf;
dma1_5.DMA_DIR = DMA_DIR_PeripheralToMemory;
dma1_5.DMA_BufferSize = RX_BUFFERSIZE;
dma1_5.DMA_PeripheralInc = DMA_PeripheralInc_Disable;
dma1_5.DMA_MemoryInc = DMA_MemoryInc_Enable;
dma1_5.DMA_PeripheralDataSize = DMA_PeripheralDataSize_Byte;
dma1_5.DMA_MemoryDataSize = DMA_MemoryDataSize_Byte;
dma1_5.DMA_Mode = DMA_Mode_Circular;
dma1_5.DMA_Priority = DMA_Priority_Low;
dma1_5.DMA_Channel = DMA_Channel_4;
DMA_Init(DMA1_Stream5,&dma1_5);
DMA_Cmd(DMA1_Stream5,ENABLE);
for(int i=0;i<RX_BUFFERSIZE;i++){
m_rxBuf[i] = 0;
}
USART_DMACmd(USART2,USART_DMAReq_Tx|USART_DMAReq_Rx, ENABLE);
USART_Cmd(USART2, ENABLE);
}
void gpsCLI()
{
USART_InitTypeDef USART_InitStructure;
uint8_t gpsQuery = 'x';
uint8_t validQuery = false;
cliBusy = true;
cliPrint("\nEntering GPS CLI....\n\n");
while(true)
{
cliPrint("GPS CLI -> ");
while ((cliAvailable() == false) && (validQuery == false));
if (validQuery == false)
gpsQuery = cliRead();
cliPrint("\n");
switch(gpsQuery)
{
///////////////////////////
case 'a': // GPS Installation Data
cliPrint("\n");
switch(eepromConfig.gpsType)
{
///////////////
case NO_GPS:
cliPrint("No GPS Installed....\n\n");
break;
///////////////
case MEDIATEK_3329_BINARY:
cliPrint("MediaTek 3329 GPS installed, Binary Mode....\n\n");
break;
///////////////
case MEDIATEK_3329_NMEA:
cliPrint("MediaTek 3329 GPS Installed, NMEA Mode....\n\n");
break;
///////////////
case UBLOX:
cliPrint("UBLOX GPS Installed, Binary Mode....\n\n");
break;
///////////////
}
cliPrintF("GPS Baud Rate: %6ld\n\n", eepromConfig.gpsBaudRate);
validQuery = false;
break;
///////////////////////////
case 'x':
cliPrint("\nExiting GPS CLI....\n\n");
cliBusy = false;
return;
break;
///////////////////////////
case 'A': // Set GPS Installed State to False
eepromConfig.gpsType = NO_GPS;
gpsQuery = 'a';
validQuery = true;
break;
///////////////////////////
case 'B': // Set GPS Type to MediaTek 3329 Binary
eepromConfig.gpsType = MEDIATEK_3329_BINARY;
initGPS();
gpsQuery = 'a';
validQuery = true;
break;
///////////////////////////
case 'C': // Set GPS Type to MediaTek 3329 NMEA
eepromConfig.gpsType = MEDIATEK_3329_NMEA;
initGPS();
gpsQuery = 'a';
validQuery = true;
break;
///////////////////////////
case 'D': // Set GPS Type to UBLOX Binary
eepromConfig.gpsType = UBLOX;
initGPS();
gpsQuery = 'a';
validQuery = true;
break;
///////////////////////////
case 'S': // Read GPS Baud Rate
eepromConfig.gpsBaudRate = (uint16_t)readFloatCLI();
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = eepromConfig.gpsBaudRate;
USART_Init(USART2, &USART_InitStructure);
gpsQuery = 'a';
validQuery = true;
break;
///////////////////////////
case 'W': // Write EEPROM Parameters
cliPrint("\nWriting EEPROM Parameters....\n\n");
writeEEPROM();
break;
///////////////////////////
case '?':
cliPrint("\n");
cliPrint("'a' Display GPS Installation Data 'A' Set GPS Type to No GPS\n");
cliPrint(" 'B' Set GPS Type to MediaTek 3329 Binary\n");
cliPrint(" 'C' Set GPS Type to MediaTek 3329 NMEA\n");
cliPrint(" 'D' Set GPS Type to UBLOX\n");
cliPrint(" 'S' Set GPS Baud Rate\n");
cliPrint(" 'W' Write EEPROM Parameters\n");
cliPrint("'x' Exit GPS CLI '?' Command Summary\n");
cliPrint("\n");
break;
///////////////////////////
}
}
}
void USART_Configuration(u8 PORT, u32 baudrate)
{
USART_InitTypeDef USART_InitStructure;
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = baudrate;
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No ;
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
if( PORT == USART_DXL )
{
Baudrate_DXL = baudrate;
USART_DeInit(USART1);
/* Configure the USART1 */
USART_Init(USART1, &USART_InitStructure);
/* Enable USART1 Receive and Transmit interrupts */
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
//USART_ITConfig(USART1, USART_IT_TC, ENABLE);
/* Enable the USART1 */
USART_Cmd(USART1, ENABLE);
}
else if( PORT == USART_ZIGBEE )
{
Baudrate_ZIGBEE = baudrate;
USART_DeInit(UART5);
/* Configure the UART5 */
USART_Init(UART5, &USART_InitStructure);
/* Enable UART5 Receive and Transmit interrupts */
USART_ITConfig(UART5, USART_IT_RXNE, ENABLE);
/* Enable the UART5 */
USART_Cmd(UART5, ENABLE);
}
else if( PORT == USART_PC )
{
Baudrate_PC = baudrate;
USART_DeInit(USART3);
/* Configure the USART3 */
USART_Init(USART3, &USART_InitStructure);
/* Enable USART3 Receive and Transmit interrupts */
USART_ITConfig(USART3, USART_IT_RXNE, ENABLE);
//USART_ITConfig(USART3, USART_IT_TC, ENABLE);
/* Enable the USART3 */
USART_Cmd(USART3, ENABLE);
}
}
int uart_open (uint8_t uart, uint32_t baud, uint32_t flags)
{
USART_InitTypeDef USART_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
if (uart == 1) {
// get things to a known state
USART_DeInit(USART1);
// Enable clock for GPIOA
RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB, ENABLE);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource6, GPIO_AF_USART1);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource7, GPIO_AF_USART1);
// Turn on clocks for USART1
RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
// DEBUG
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_8;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_High_Speed;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// Configure TX pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //GPIO_Mode_AF_PP;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_High_Speed;
GPIO_Init(GPIOB, &GPIO_InitStructure);
// Configure RX pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_7;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF; //GPIO_Mode_IN;//GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
GPIO_InitStructure.GPIO_Speed = GPIO_High_Speed;
GPIO_Init(GPIOB, &GPIO_InitStructure);
#ifdef HWFLOWCTRL
// Configure CTS pin
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;//GPIO_Mode_IN_FLOATING;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
// Configure RTS pin -- software controlled
GPIO_WriteBit(GPIOA, GPIO_Pin_12, 1); //TODO // nRTS disabled
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT; //GPIO_Mode_Out_PP;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_2MHz;
GPIO_Init(GPIOA, &GPIO_InitStructure);
#endif
// Configure the UART
USART_StructInit(&USART_InitStructure);
USART_InitStructure.USART_BaudRate = baud;
#ifdef HWFLOWCTRL
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_CTS;
#else
USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
#endif
USART_InitStructure.USART_WordLength = USART_WordLength_8b;
USART_InitStructure.USART_StopBits = USART_StopBits_1;
USART_InitStructure.USART_Parity = USART_Parity_No;
USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
USART_Init(USART1, &USART_InitStructure);
// Enable RX Interrupt. TX interrupt enabled in send routine
USART_ClearITPendingBit(USART1, USART_IT_RXNE);
//disable Transmit Data Register empty interrupt
USART_ITConfig(USART1, USART_IT_TXE, DISABLE);
//enable Receive Data register not empty interrupt
USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
InitQueue(&UART1_RXq);
InitQueue(&UART1_TXq);
// Configure NVIC
/* Configure the NVIC Preemption Priority Bits */
//NVIC_PriorityGroupConfig(NVIC_PriorityGroup_0);
/* Enable the USART1 Interrupt */
NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
// Enable USART1
USART_Cmd(USART1, ENABLE);
#ifdef HWFLOWCTRL
// nRTS enabled
GPIO_WriteBit(GPIOA, GPIO_Pin_12, 0);
#endif
return 0;
}
return 1; // only handle UART2
}